Cqi reporting and generation in wireless network

Abstract

When reporting a channel quality metric, such as a channel quality index (CQI) to a base station, a user equipment (UE) may base its report on a calculated spectral efficiency for allocated data channels. The UE may calculate a spectral efficiency metric over a number of subframes to arrive at an average spectral efficiency measurement which may be converted to CQI and reported to a base station.

What is claimed is: 
     
         1 . A method of wireless communication, comprising:
 computing a spectral efficiency metric of each allocated resource of a data channel based at least in part on an amplitude and energy of received symbols of the data channel; and   reporting a channel quality metric based at least in part on the spectral efficiency metric.   
     
     
         2 . The method of  claim 1 , in which the resource is one of a code, frequency and/or time. 
     
     
         3 . The method of  claim 1 , further comprising averaging the spectral efficiency metric over allocated codes in a subframe to determine a subframe spectral efficiency. 
     
     
         4 . The method of  claim 1 , further comprising filtering the spectral efficiency metric across a plurality of subframes, and in which the channel quality metric is based at least in part on the filtered spectral efficiency metric. 
     
     
         5 . The method of  claim 1 , in which the channel quality metric comprises a recommended modulation format and recommended transport block size based at least in part on the spectral efficiency metric. 
     
     
         6 . An apparatus for wireless communication, comprising:
 means for computing a spectral efficiency metric of each allocated resource of a data channel based at least in part on an amplitude and energy of received symbols of the data channel; and   means for reporting a channel quality metric based at least in part on the spectral efficiency metric.   
     
     
         7 . The apparatus of  claim 6 , in which the resource is one of a code, frequency and/or time. 
     
     
         8 . The apparatus of  claim 6 , further comprising means for averaging the spectral efficiency metric over allocated codes in a subframe to determine a subframe spectral efficiency. 
     
     
         9 . The apparatus of  claim 6 , further comprising means for filtering the spectral efficiency metric across a plurality of subframes, and in which the channel quality metric is based at least in part on the filtered spectral efficiency metric. 
     
     
         10 . The apparatus of  claim 6 , in which the channel quality metric comprises a recommended modulation format and recommended transport block size based at least in part on the spectral efficiency metric. 
     
     
         11 . A computer program product configured for operation in a wireless communication network, the computer program product comprising:
 a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
 program code to compute a spectral efficiency metric of each allocated resource of a data channel based at least in part on an amplitude and energy of received symbols of the data channel; and 
 program code to report a channel quality metric based at least in part on the spectral efficiency metric. 
   
     
     
         12 . The computer program product of  claim 11 , in which the resource is one of a code, frequency and/or time. 
     
     
         13 . The computer program product of  claim 11 , in which the program code further comprises program code to average the spectral efficiency metric over allocated codes in a subframe to determine a subframe spectral efficiency. 
     
     
         14 . The computer program product of  claim 11 , in which the program code further comprises program code to filter the spectral efficiency metric across a plurality of subframes, and in which the channel quality metric is based at least in part on the filtered spectral efficiency metric. 
     
     
         15 . The computer program product of  claim 11 , in which the channel quality metric comprises a recommended modulation format and recommended transport block size based at least in part on the spectral efficiency metric. 
     
     
         16 . An apparatus configured for operation of a multi-radio user equipment (UE) in a wireless communication network, the apparatus comprising:
 a memory; and   at least one processor coupled to the memory, the at least one processor being configured:
 to compute a spectral efficiency metric of each allocated resource of a data channel based at least in part on an amplitude and energy of received symbols of the data channel; and 
 to report a channel quality metric based at least in part on the spectral efficiency metric. 
   
     
     
         17 . The apparatus of  claim 16 , in which the resource is one of a code, frequency and/or time. 
     
     
         18 . The apparatus of  claim 16 , in which the at least one processor is further configured to average the spectral efficiency metric over allocated codes in a subframe to determine a subframe spectral efficiency. 
     
     
         19 . The apparatus of  claim 16 , in which the at least one processor is further configured to filter the spectral efficiency metric across a plurality of subframes, and in which the channel quality metric is based at least in part on the filtered spectral efficiency metric. 
     
     
         20 . The apparatus of  claim 16 , in which the channel quality metric comprises a recommended modulation format and recommended transport block size based at least in part on the spectral efficiency metric.